Educational guide — not legal advice. Confirm details with a licensed attorney in your state before relying on this page.
Definition
Estate planning is the preparation of the legal instruments that direct two things: who receives a person’s property on death, and who is authorised to act for them if they cannot act for themselves. Each instrument governs a defined set of decisions, and they do not overlap completely — a document set that omits one leaves those decisions to the default rules of the state.
The instruments are listed below with what each legally accomplishes.
The instruments, and what each one does
| Instrument | Takes effect | Governs |
|---|---|---|
| Will | At death, on admission to probate | Property that has no other transfer mechanism; nomination of executor and of a guardian for minor children |
| Financial power of attorney | On signing, or on incapacity if springing | Authority to transact on the signer’s behalf during their lifetime |
| Healthcare power of attorney | On incapacity | Authority to make medical decisions for the signer |
| Healthcare directive / living will | On incapacity | The signer’s written instructions on life-sustaining treatment |
| Beneficiary designation | At death, by contract | The specific account or policy it is filed against |
| Revocable living trust | On signing and funding | Only the assets retitled into the trust |
A will
A will is admitted to probate after death and directs the property that passes through the estate. It performs three functions no other instrument performs:
- It nominates an executor — the person the court appoints to administer the estate.
- It nominates a guardian for minor children. No other instrument makes this nomination; without it, the court appoints under the state’s guardianship provisions.
- It directs specific bequests — identified items to identified people or organisations.
A will has no effect during the signer’s lifetime, does not avoid probate, and does not control an asset with a valid beneficiary designation. See Will vs. Trust: How They Differ.
A power of attorney
A power of attorney authorises an agent to act for the principal while the principal is alive. Two are ordinarily executed:
- Financial power of attorney — authority to pay bills, manage accounts, file tax returns, and deal with property, to the extent the document grants it.
- Healthcare power of attorney (in some states, a healthcare proxy) — authority to make medical decisions when the principal cannot.
Where no power of attorney exists and a person becomes unable to manage their affairs, authority is obtained instead through a court guardianship or conservatorship proceeding under the state’s statute. The documented differences between the two routes — who applies, what the court supervises, and the cost — are set out in Power of Attorney vs. Guardianship.
A healthcare directive (living will)
A healthcare directive is the signer’s written instructions on end-of-life care: life-sustaining treatment, resuscitation, artificial nutrition and hydration, comfort care, and organ donation. Combined with a healthcare power of attorney it is generally called an advance directive. Statutory forms are published by most states’ health departments.
Beneficiary designations
Retirement accounts, life insurance policies, payable-on-death bank accounts, and transfer-on-death brokerage accounts pass to the named beneficiary by contract at the moment of death. The will does not control these assets, and neither does a trust unless the account is retitled or the trust is named as beneficiary.
The consequence is documented and specific: a designation naming a former spouse remains operative as to the plan administrator notwithstanding a later will to the contrary. Several states revoke such designations on divorce by statute, but ERISA-governed plans are treated differently — the US Supreme Court held in Egelhoff v. Egelhoff, 532 U.S. 141 (2001), that ERISA pre-empts state revocation-on-divorce statutes as applied to plan benefits. See Beneficiary Designations.
A revocable living trust
A revocable living trust is a separate legal arrangement created during the settlor’s lifetime and funded by retitling assets into the trust’s name. The trust holds title; the settlor retains control during life; on death, the successor trustee distributes the trust assets without probate.
The scope of a trust is limited to what has been retitled into it. An unfunded trust directs nothing. The documented attributes on which a trust differs from a will — probate exposure, public-record status, cost, funding requirement, revocability — are set out side by side in Will vs. Trust: How They Differ, and per-state trust costs in Living Trust Cost by State.
A revocable trust does not reduce federal estate tax; the assets remain in the settlor’s taxable estate because the settlor retains control. See Estate Tax vs. Inheritance Tax.
What the intestacy statutes do where there is no will
Every state has an intestacy statute setting a default order of distribution. The common pattern: spouse and descendants first in statutory shares, then parents, then siblings and their descendants, then outward through the statutory degrees of kinship, with escheat to the state where no taker is found.
The statutes reach only the classes of relatives they name. They make no provision for an unmarried partner, an unadopted stepchild, a friend, or a charity, and they contain no mechanism to nominate a guardian for minor children or to direct a specific item to a specific person. Each state’s shares, thresholds and statute sections are documented in What Happens If You Die Without a Will, by State.
The documented thresholds at which additional instruments apply
Several instruments apply only above a stated threshold or in stated circumstances. The thresholds are set by statute and are stated here as they are published.
| Circumstance | The rule, as documented |
|---|---|
| Real property in more than one state | Probate of real property is generally opened in the state where the land sits; a second, ancillary proceeding is required in each additional state. Assets held in a funded trust are not subject to it. |
| Federal estate tax | Applies only to estates above the basic exclusion amount — $15,000,000 per decedent for deaths in 2026 (IRS, What’s New — Estate and Gift Tax, verified 2026-08-15), with portability available between spouses. |
| State estate or inheritance tax | Twelve states and DC impose an estate tax at thresholds from roughly $1M to $7M; six states impose an inheritance tax. Documented state by state in Estate Tax vs. Inheritance Tax. |
| Beneficiary receiving means-tested benefits | An outright inheritance counts as a resource for SSI and Medicaid eligibility. A first-party or third-party special needs trust is the instrument the Social Security Act, 42 U.S.C. §1396p(d)(4), excepts from that treatment. |
| Small estates | Most states publish a small-estate affidavit threshold below which no formal administration is required. Thresholds and cites are in Probate Cost by State. |
Events with a documented statutory effect
State statutes attach consequences to certain events regardless of whether documents are updated:
- Divorce — most states revoke provisions in favour of a former spouse in a will by operation of law; the ERISA position on plan beneficiary designations is different (see above).
- Marriage after a will is executed — many states give an omitted spouse an intestate share notwithstanding the will’s terms.
- Birth or adoption after a will is executed — most states give an omitted after-born child a share under pretermitted-heir provisions.
- Moving to another state — a validly executed will is generally honoured across state lines, but self-proving affidavit forms, witness requirements and statutory healthcare-directive forms differ.
The state-by-state effect of these events is documented in Estate Planning and Life Events.
Glossary of terms used across this site
- Testator — the person who makes a will.
- Executor (personal representative) — the person appointed to administer a probate estate.
- Administrator — the person appointed where there is no will or no named executor able to serve.
- Intestate — dying without a valid will; testate — dying with one.
- Probate — the court-supervised process of administering a decedent’s estate.
- Letters testamentary / letters of administration — the court’s grant of authority to the personal representative.
- Settlor (grantor, trustor) — the person who creates a trust.
- Trustee — the person who holds and administers trust property.
- Funding — retitling assets into a trust’s name.
- Escheat — passage of property to the state where no taker can be found.
- Ancillary probate — a second probate proceeding in another state where the decedent owned real property.
- Pretermitted heir — a child or spouse omitted from a will who takes a statutory share.
A fuller list is in the glossary.
What the record shows
An estate plan is a set of instruments with distinct legal effects, not a single document. The will governs probate property and the two nominations no other instrument can make. Powers of attorney and the healthcare directive govern lifetime incapacity; without them, authority comes from a court proceeding. Beneficiary designations govern the accounts they are filed against and are unaffected by the will. A trust governs only the assets retitled into it. Where an instrument is absent, the state’s default rule applies in its place, and each of those defaults is a statute that can be read.
Related reading
- Estate Planning Checklist — the full document list in one place.
- Will vs. Trust: How They Differ
- What Is Probate and How Does It Work?
- Do I Need a Will? What a Will Does and What Intestacy Does
- What Happens If You Die Without a Will, by State
- Estate Planning by Age
Educational information only — not legal, tax, or financial advice. Estate planning rules vary substantially by state and change over time. Consult a licensed attorney in your jurisdiction. Sources: state probate codes and intestacy statutes (section cites in the by-state guides); Uniform Probate Code; IRS, What’s New — Estate and Gift Tax (verified 2026-08-15); 42 U.S.C. §1396p(d)(4); Egelhoff v. Egelhoff, 532 U.S. 141 (2001).